unit 4 globalwarming warming-upunit 4 global warming warming-upunit 4 global warming warming-upunit 4 global warming warming-up.ppt

Taking public transport like buses can reduce greenhouse gas emissions. And taking train can also help a reduction of greenhouse gas. The recycling symbol buy the recycled products Recycled products recycling the bottles paper recycling Your paper could become part of a road or race-track. using low-flow shower heads buying energy- efficient light bulbs replace with “低碳生活” (low-carbon life) “低碳生活”(low-carbon life)，就是指生活作息时所耗用的能量要尽力减少，从而减低碳，特别是二氧化碳的排放量，从而减少对大气的污染，减缓生态恶化，主要是从节电节气和回收三个环节来改变生活细节。 low-carbon life Homework Look up the new words and expressions of the text in the dictionary. 2. Preview Reading THE EARTH IS BECOMING WARMER — BUT DOES IT MATTER? * * * * * Global warming consume renewable greenhouse Fahrenheit vt. 消费; 消耗; 耗尽; 吃完 adj. 能再生的; 可更新的 n. 温室; 花房 adj. 华氏的 n. 华氏温度计 Words and Expressions Global warming ENERGY We depend on energy to do many things in our daily lives. In China, efforts are already underway to develop alternative energies and pursue a green economy. What causes the global warming? Human activity or a random but natural phenomenon? What part does energy play in it? Things that use energy around us or at any other places: Where does all this energy come from? Where does all this energy come from? wind power a coal power station an oil refinery a nuclear power plant solar panels a hydroelectric dam Renewable or non-renewable? √ Look at these pictures, are they renewable or non-renewable? Renewable or non-renewable? √ Sample lists Things that use energy Sources of energy Renewable / non-renewable light heating television cassette player video recorder oil coal natural gas wind (wind power) sun (solar energy) renewable renewable non-renewable non-renewable non-renewable fridge stove washing machine hair- dryer water (hydro-electric) renewable plant waste (biomass energy) renewable hot springs or geysers (geothermal energy) renewable the sea (tidal energy) renewable computer uranium (nucle